/*
 * Copyright (C) 2012 Fabien Barbero
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights 
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.flickr.tasks;

import oauth.signpost.OAuth;
import android.app.ProgressDialog;
import android.content.Context;
import android.net.Uri;
import android.os.AsyncTask;
import android.util.Log;
import com.flickr.R;
import com.flickr.api.auth.AuthenticationService;
import com.flickr.api.auth.Caller;
import com.flickr.api.auth.OAuthHandler;
import com.flickr.callbacks.AuthenticationCallback;


public class AccessTokenTask extends AbstractAuthenticationTask
{
    private static final String TAG = AccessTokenTask.class.getSimpleName();
    
    private final Uri mUri;
    private final AuthenticationCallback mCallback;
    private final AuthenticationService mAuthService;

    public AccessTokenTask(Uri uri, AuthenticationService authService, AuthenticationCallback callback, Context context) {
        super(context);
        mUri = uri;
        mAuthService = authService;
        mCallback = callback;
    }
    
    @Override
    protected Void doInBackground(Void... params)
    {
        OAuthHandler oauthHandler = OAuthHandler.getHandler();
        try {
            // Uri for autorization callback
            Log.i(TAG, "Authorization access detected with uri: " + mUri);
            String verifier = mUri.getQueryParameter(OAuth.OAUTH_VERIFIER);
            String token = mUri.getQueryParameter(OAuth.OAUTH_TOKEN);
            if (verifier == null) {
                throw new IllegalArgumentException("No authentication code found");
            }
            if (token == null) {
                throw new IllegalArgumentException("No token code found");
            }
            oauthHandler.retrieveAccessToken(verifier);
            
            Caller caller = mAuthService.authenticate();
            mCallback.onUserLogged(caller);
            
        } catch (Exception ex) {
            oauthHandler.clear();
            throw new UnsupportedOperationException("Authentication error", ex);
        }
        
        return null;
    }
    
}
